Tootfinder

Webification of symmetry classes of plane partitions
Ashleigh Adams, Jessica Striker
https://arxiv.org/abs/2508.16565 https://arxiv.org/pdf/2508.16565

Webification of symmetry classes of plane partitions
Webs are graphical objects that give a tangible, combinatorial way to compute and classify tensor invariants. Recently, [Gaetz, Pechenik, Pfannerer, Striker, Swanson 2023+] found a rotation-invariant web basis for $\mathrm{SL}_4$, as well as its quantum deformation $U_q(\mathfrak{sl}_4)$, and a bijection between move equivalence classes of $U_q(\mathfrak{sl}_4)$-webs and fluctuating tableaux such that web rotation corresponds to tableau promotion. They also found a bijection between the set of …

Can’t wait to see this again. #Dogma
https://youtu.be/rwSRribTgdA?si=WaFwvIZVQ6QcfnmW

Generating and Weaving Topological Event Wavepackets in Photonic Spacetime Crystals with Fully Energy-Momentum Gapped
Liang Zhang, Zirui Zhao, Qiaofei Pan, Chenhao Pan, Qingqing Cheng, Yiming Pan
https://arxiv.org/abs/2507.15309

Generating and Weaving Topological Event Wavepackets in Photonic Spacetime Crystals with Fully Energy-Momentum Gapped
We propose a novel type of topological excitation topological event wavepackets (TEWs) emerging in photonic spacetime crystals (STCs) with spacetime modulated dielectric constants. These TEWs exhibit strong spatiotemporal localization and are topologically protected by a fully opened energy momentum (ωk) gap, within which conventional steady states are absent. We further demonstrate that TEWs are spectrally confined within the ωk-gap, providing a combined measurement for probing the emergence…

Unifying renormalized and bare viscosity in two-dimensional molecular dynamics simulations
Kazuma Yokota, Masato Itami, Shin-ichi Sasa
https://arxiv.org/abs/2506.16002

Unifying renormalized and bare viscosity in two-dimensional molecular dynamics simulations
Fluctuating hydrodynamics provides a framework connecting mesoscopic fluctuations with macroscopic transport behavior. To bridge mesoscopic and macroscopic transport from microscopic dynamics, we introduce a wavenumber-dependent viscosity, defined via the equilibrium correlation of time-averaged Fourier components of the fine-grained shear stress field, as a finite-wavevector extension of the Green--Kubo formula. Two-dimensional molecular dynamics simulations reveal its small-wavenumber diverge…

🇺🇦 #NowPlaying on KEXP's #Audioasis
MASZER:
🎵 Fata Mirage
#MASZER
https://maszer.bandcamp.com/track/fata-mirage
https://open.spotify.com/track/1WOS8RdWV9AhpvoUJRN2kz

Plane-marching PSE wavepacket models for perfectly-expanded twin jets
Iv\'an Padilla-Montero, Daniel Rodr\'iguez, Vincent Jaunet, Peter Jordan
https://arxiv.org/abs/2508.05873

Plane-marching PSE wavepacket models for perfectly-expanded twin jets
The importance of wavepackets in the generation of mixing noise in twin jets is expected by extrapolation of the insights previously obtained from the study of single isolated jets. This work presents wavepacket models for supersonic round twin jets operating at perfectly-expanded conditions, computed via plane-marching parabolized stability equations based on mean flows obtained from the compressible RANS equations. High-speed schlieren visualizations and non-time-resolved PIV measurements are…

🇺🇦 #NowPlaying on #BBC6Music's #RadcliffeAndMaconie
Toria Wooff:
🎵 The Plough
#ToriaWooff
https://toriawooff.bandcamp.com/track/the-plough
https://open.spotify.com/track/02WfUBPPCQvOJbXj8U1omd

Fundamental measure theory for predicting many-body correlation functions
Ilian Pihlajamaa, Teunike A. van de Pol, Liesbeth M. C. Janssen
https://arxiv.org/abs/2508.14642 https:…

Fundamental measure theory for predicting many-body correlation functions
We study many-body correlation functions within various Fundamental Measure Theory (FMT) formulations and compare their predictions to Monte Carlo simulations of hard-sphere fluids. FMT accurately captures key features of three- and four-body structure, particularly at low and intermediate wavevectors. We show that the dominant contributions to the four-point structure factor arise from direct triplet correlations, allowing evaluation of four-point correlations to be greatly simplified. In glas…

🇺🇦 #NowPlaying on KEXP's #VarietyMix
Winter:
🎵 Winter
#Winter
https://adamfranklin.bandcamp.com/album/winter-winter-winter
https://open.spotify.com/track/3ocNwf4wV81aHvbx7V3Gcv

Hierarchical Wavepacket Propagation Framework via ML-MCTDH for Molecular Reaction Dynamics
Xingyu Zhang, Qingyong Meng
https://arxiv.org/abs/2507.05593 htt…

Hierarchical Wavepacket Propagation Framework via ML-MCTDH for Molecular Reaction Dynamics
This work presents a computational framework for studying reaction dynamics via wavepacket propagation, employing the multiconfiguration time-dependent Hartree (MCTDH) method and its multilayer extension (ML-MCTDH) as the core methodologies. The core idea centers on the concept of modes that combine several coordinates along with their hierarchical separations because the degrees of freedom are too numerous to be efficiently treated as a single mode. First, the system is partitioned into severa…